Add hashing and serialization utilities with tests

Author: L4B0MB4

.github/workflows/action.yml

@@ -0,0 +1,23 @@
+name: Go
+
+on:
+  push:
+    branches: ["master", "development"]
+    tags:
+      - "*"
+  pull_request:
+    branches: ["master", "development"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.23.1"
+
+      - name: Test
+        run: go test -v ./...

go.mod

@@ -0,0 +1,37 @@
+module github.com/PRYVT/utils
+
+go 1.23.1
+
+require (
+	github.com/bytedance/sonic v1.11.6 // indirect
+	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.10.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.20.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/rs/zerolog v1.33.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,95 @@
+github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
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+github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
+github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
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pkg/auth/auth_middleware.go

@@ -0,0 +1,49 @@
+package auth
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+)
+
+type AuthMiddleware struct {
+	tokenManager *TokenManager
+}
+
+func NewAuthMiddleware(tm *TokenManager) *AuthMiddleware {
+	return &AuthMiddleware{tokenManager: tm}
+}
+
+func (am *AuthMiddleware) AuthenticateMiddleware(c *gin.Context) {
+	// Retrieve the token from the Authorization header
+	authHeader := c.GetHeader("Authorization")
+	if authHeader == "" {
+		log.Error().Msg("Authorization header is missing")
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
+		c.Abort()
+		return
+	}
+
+	// Check if the token has the Bearer prefix
+	const prefix = "Bearer "
+	if len(authHeader) < len(prefix) || authHeader[:len(prefix)] != prefix {
+		log.Error().Msg("Authorization header format must be Bearer {token}")
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
+		c.Abort()
+		return
+	}
+
+	// Extract the token
+	tokenString := authHeader[len(prefix):]
+
+	// Verify the token
+	_, err := am.tokenManager.VerifyToken(tokenString)
+	if err != nil {
+		log.Error().Err(err).Msg("Token verification failed")
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
+		c.Abort()
+		return
+	}
+	c.Next()
+}

pkg/auth/token_manager.go

@@ -0,0 +1,60 @@
+package auth
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+	"github.com/rs/zerolog/log"
+)
+
+type TokenManager struct {
+	signingSecret string
+}
+
+func NewTokenManager() (*TokenManager, error) {
+	secret := os.Getenv("SIGNING_SECRET")
+	if secret == "" {
+		return nil, fmt.Errorf("SIGNING_SECRET environment variable not set")
+	}
+	return &TokenManager{signingSecret: secret}, nil
+}
+
+func (tm *TokenManager) CreateToken(userUuid uuid.UUID) (string, error) {
+	t := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"sub": userUuid,
+		"iss": "pryvt",
+		"aud": "local-audience",
+		"exp": time.Now().Add(time.Second * 30).Unix(),
+		"iat": time.Now().Unix(),
+	})
+
+	signedKey, err := t.SignedString([]byte(tm.signingSecret))
+	if err != nil {
+		log.Err(err).Msg("Error while signing token")
+		return "", fmt.Errorf("error while signing token")
+	}
+	return signedKey, nil
+}
+func (tm *TokenManager) VerifyToken(tokenString string) (*jwt.Token, error) {
+	// Parse the token with the secret key
+
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		return []byte(tm.signingSecret), nil
+	})
+
+	// Check for verification errors
+	if err != nil {
+		return nil, err
+	}
+
+	// Check if the token is valid
+	if !token.Valid {
+		return nil, fmt.Errorf("invalid token")
+	}
+
+	// Return the verified token
+	return token, nil
+}

pkg/hash/hashing.go

@@ -0,0 +1,12 @@
+package hash
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+)
+
+func HashPassword(password string) string {
+	hasher := sha256.New()
+	hasher.Write([]byte(password))
+	return hex.EncodeToString(hasher.Sum(nil))
+}

pkg/hash/hashing_test.go

@@ -0,0 +1,15 @@
+package hash
+
+import (
+	"testing"
+)
+
+func TestHashPassword(t *testing.T) {
+	password := "mysecretpassword"
+	hashedPassword := HashPassword(password)
+
+	if hashedPassword != "94aefb8be78b2b7c344d11d1ba8a79ef087eceb19150881f69460b8772753263" {
+		t.Errorf("Expected hashed password to be non-empty")
+	}
+
+}

pkg/hash/uuid.go

@@ -0,0 +1,11 @@
+package hash
+
+import (
+	"github.com/google/uuid"
+)
+
+func GenerateGUID(input string) uuid.UUID {
+	namespace := uuid.MustParse("6b37b120-9dad-1ad1-8fb4-00c04fd430c8")
+	guid := uuid.NewSHA1(namespace, []byte(input))
+	return guid
+}

pkg/hash/uuid_test.go

@@ -0,0 +1,14 @@
+package hash
+
+import (
+	"testing"
+)
+
+func TestGenerateGUID(t *testing.T) {
+	input := "test-input"
+	guid := GenerateGUID(input)
+	expectedGuid := "ed5d3bd6-3c53-5059-be16-b5dd4b170406"
+	if guid.String() != expectedGuid {
+		t.Errorf("Expected %v, but got %v", expectedGuid, guid)
+	}
+}

pkg/serialization/serialization.go

@@ -0,0 +1,23 @@
+package serialization
+
+import (
+	"encoding/json"
+)
+
+func UnsafeDeserializeAny[T any](b []byte) *T {
+	out := new(T)
+	err := json.Unmarshal(b, &out)
+	if err != nil {
+		panic(err)
+	}
+	return out
+}
+
+func UnsafeSerializeAny[T any](t T) []byte {
+
+	b, err := json.Marshal(t)
+	if err != nil {
+		panic(err)
+	}
+	return b
+}