controllers.CheckAuth - Code Metrics - Inspection of "main" - memnix/memnix-rest - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — main (#42)

by Yume

created 2022-07-05 10:10 UTC

controllers.CheckAuth A

↳ Parent: app/controllers/auth.go

Complexity

Conditions

Size

Total Lines	30
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	17
nop	2
dl	0
loc	30
rs	9.55
c	0
b	0
f	0

package controllers

import (
	"fmt"
	"github.com/memnix/memnixrest/app/models"
	"github.com/memnix/memnixrest/app/queries"
	"github.com/memnix/memnixrest/pkg/database"
	"github.com/memnix/memnixrest/pkg/utils"
	"net/http"
	"os"
	"strconv"
	"strings"
	"time"

	"github.com/gofiber/fiber/v2"
	"github.com/golang-jwt/jwt"
	"golang.org/x/crypto/bcrypt"
)

var SecretKey = os.Getenv("SECRET") // SecretKey env variable

// Register function to create a new user
// @Description Create a new user
// @Summary creates a new user
// @Tags Auth
// @Produce json
// @Param credentials body models.RegisterStruct true "Credentials"
// @Success 200 {object} models.User
// @Failure 403 "Forbidden"
// @Router /v1/register [post]
func Register(c *fiber.Ctx) error {
	db := database.DBConn // DB Conn

	var data models.RegisterStruct // Data object

	if err := c.BodyParser(&data); err != nil {
		return err
	} // Parse body

	// Register checks
	if len(data.Password) > utils.MaxPasswordLen || len(data.Username) > utils.MaxUsernameLen || len(data.Email) > utils.MaxEmailLen {
		log := models.CreateLog(fmt.Sprintf("Error on register: %s - %s", data.Username, data.Email), models.LogBadRequest).SetType(models.LogTypeWarning).AttachIDs(0, 0, 0)
		_ = log.SendLog()
		return queries.RequestError(c, http.StatusForbidden, utils.ErrorRequestFailed)
	}

	password, _ := bcrypt.GenerateFromPassword([]byte(data.Password), 10) // Hash password
	user := models.User{
		Username: data.Username,
		Email:    strings.ToLower(data.Email),
		Password: password,
	} // Create object

	//TODO: manual checking for unique username and email
	if err := db.Create(&user).Error; err != nil {
		log := models.CreateLog(fmt.Sprintf("Error on register: %s - %s", data.Username, data.Email), models.LogAlreadyUsedEmail).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog()
		return queries.RequestError(c, http.StatusForbidden, utils.ErrorAlreadyUsedEmail)
	} // Add user to DB

	// Create log
	log := models.CreateLog(fmt.Sprintf("Register: %s - %s", user.Username, user.Email), models.LogUserRegister).SetType(models.LogTypeInfo).AttachIDs(user.ID, 0, 0)
	_ = log.SendLog() // Send log

	return c.JSON(user) // Return user
}

// Login function to log in a user and return access with fresh token
// @Description Login the user and return a fresh token
// @Summary logins user and return a fresh token
// @Tags Auth
// @Produce json
// @Param credentials body models.LoginStruct true "Credentials"
// @Success 200 {object} models.LoginResponse
// @Failure 400 "Incorrect password or email"
// @Failure 500 "Internal error"
// @Router /v1/login [post]
func Login(c *fiber.Ctx) error {
	db := database.DBConn // DB Conn

	var data models.LoginStruct // Data object

	if err := c.BodyParser(&data); err != nil {
		return err
	} // Parse body

	var user models.User // User object

	db.Where("email = ?", strings.ToLower(data.Email)).First(&user) // Get user

	// handle error
	if user.ID == 0 { // default Id when return nil
		// Create log
		log := models.CreateLog(fmt.Sprintf("Error on login: %s", data.Email), models.LogIncorrectEmail).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog()                // Send log
		c.Status(fiber.StatusBadRequest) // BadRequest Status
		// return error message as Json object
		return c.JSON(models.LoginResponse{
			Message: "Incorrect email or password !",
			Token:   "",
		})
	}

	// Check password
	if err := bcrypt.CompareHashAndPassword(user.Password, []byte(data.Password)); err != nil {
		c.Status(fiber.StatusBadRequest) // BadRequest Status
		log := models.CreateLog(fmt.Sprintf("Error on login: %s", data.Email), models.LogIncorrectPassword).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog() // Send log
		// return error message as Json object
		return c.JSON(models.LoginResponse{
			Message: "Incorrect email or password !",
			Token:   "",
		})
	}

	// Create token
	claims := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.StandardClaims{
		Issuer:    strconv.Itoa(int(user.ID)),
		ExpiresAt: time.Now().Add(time.Hour * 336).Unix(), // 14 day
	}) // expires after 2 weeks

	token, err := claims.SignedString([]byte(SecretKey)) // Sign token
	if err != nil {
		log := models.CreateLog(fmt.Sprintf("Error on login: %s", err.Error()), models.LogLoginError).SetType(models.LogTypeError).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog()                         // Send log
		c.Status(fiber.StatusInternalServerError) // InternalServerError Status
		// return error message as Json object
		return c.JSON(models.LoginResponse{
			Message: "Incorrect email or password !",
			Token:   "",
		})
	}

	log := models.CreateLog(fmt.Sprintf("Login: %s - %s", user.Username, user.Email), models.LogUserLogin).SetType(models.LogTypeInfo).AttachIDs(user.ID, 0, 0)
	_ = log.SendLog() // Send log

	// return token as Json object
	return c.JSON(models.LoginResponse{
		Message: "Login Succeeded",
		Token:   token,
	})
}

// User function to get connected user
// @Description Get connected user
// @Summary  gets connected user
// @Tags Auth
// @Produce json
// @Success 200 {object} models.ResponseAuth
// @Failure 401 "Forbidden"
// @Security Beaver
// @Router /v1/user [get]
func User(c *fiber.Ctx) error {
	statusCode, response := IsConnected(c) // Check if connected

	return c.Status(statusCode).JSON(response) // Return response
}

// Logout function to log user logout
// @Description Logout the user and create a record in the log
// @Summary logouts the user
// @Tags Auth
// @Produce json
// @Success 200 "Success"
// @Failure 401 "Forbidden"
// @Security Beaver
// @Router /v1/logout [post]
func Logout(c *fiber.Ctx) error {
	auth := CheckAuth(c, models.PermUser) // Check auth
	if !auth.Success {
		// Return error
		return c.Status(http.StatusUnauthorized).JSON(models.ResponseHTTP{
			Success: false,
			Message: auth.Message,
			Data:    nil,
			Count:   0,
		})
	}

	// Create log
	log := models.CreateLog(fmt.Sprintf("Logout: %s - %s", auth.User.Username, auth.User.Email), models.LogUserLogout).SetType(models.LogTypeInfo).AttachIDs(auth.User.ID, 0, 0)
	_ = log.SendLog()

	// Return response with success
	return c.JSON(fiber.Map{
		"message": "successfully logged out !",
		"token":   "",
	})
}

// AuthDebugMode function to bypass auth in debug mode
func AuthDebugMode(c *fiber.Ctx) models.ResponseAuth {
	db := database.DBConn // DB Conn
	var user models.User  // User object

	// Get user
	if res := db.Where("id = ?", 6).First(&user); res.Error != nil {
		c.Status(fiber.StatusInternalServerError) // InternalServerError Status
		// return error message as Json object
		return models.ResponseAuth{
			Success: false,
			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
		}
	}

	return models.ResponseAuth{
		Success: true,
		Message: "Authenticated",
		User:    user,
	}
}

// CheckAuth function to check if user is connected
func CheckAuth(c *fiber.Ctx, p models.Permission) models.ResponseAuth {
	statusCode, response := IsConnected(c) // Check if connected

	// Check statusCode
	if statusCode != fiber.StatusOK {
		c.Status(statusCode)
		// Return response
		return response
	}

	user := response.User // Get user from response

	// Check permission
	if user.Permissions < p {
		// Log permission error
		log := models.CreateLog(fmt.Sprintf("Permission error: %s | had %s but tried %s", user.Email, user.Permissions.ToString(), p.ToString()), models.LogPermissionForbidden).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog()                  // Send log
		c.Status(fiber.StatusUnauthorized) // Unauthorized Status
		// Return response
		return models.ResponseAuth{
			Success: false,
			Message: "You don't have the right permissions to perform this request.",
		}
	}

	// Validate permissions
	return models.ResponseAuth{
		Success: true,
		Message: "Authenticated",
		User:    user,
	}
}

// IsConnected function to check if user is connected
func IsConnected(c *fiber.Ctx) (int, models.ResponseAuth) {
	db := database.DBConn          // DB Conn
	tokenString := extractToken(c) // Extract token
	var user models.User           // User object

	// Parse token
	token, err := jwt.Parse(tokenString, jwtKeyFunc)
	if err != nil {
		// Return error
		return fiber.StatusForbidden, models.ResponseAuth{
			Success: false,
			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
			User:    user,
		}
	}
	// Check if token is valid
	claims := token.Claims.(jwt.MapClaims)

	// Get user from token
	if res := db.Where("id = ?", claims["iss"]).First(&user); res.Error != nil {
		// Generate log
		log := models.CreateLog(fmt.Sprintf("Error on check auth: %s", res.Error), models.LogLoginError).SetType(models.LogTypeError).AttachIDs(user.ID, 0, 0)
		_ = log.SendLog()                         // Send log
		c.Status(fiber.StatusInternalServerError) // InternalServerError Status
		// return error
		return fiber.StatusInternalServerError, models.ResponseAuth{
			Success: false,
			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
			User:    user,
		}
	}

	// User is connected
	return fiber.StatusOK, models.ResponseAuth{
		Success: true,
		Message: "User is connected",
		User:    user,
	}
}

// extractToken function to extract token from header
func extractToken(c *fiber.Ctx) string {
	token := c.Get("Authorization") // Get token from header
	// Normally Authorization HTTP header.
	onlyToken := strings.Split(token, " ") // Split token
	if len(onlyToken) == 2 {
		return onlyToken[1] // Return only token
	}
	return "" // Return empty string
}

// jwtKeyFunc function to get the key for the token
func jwtKeyFunc(_ *jwt.Token) (interface{}, error) {
	return []byte(SecretKey), nil // Return secret key
}


1			package controllers
2
3			import (
4			"fmt"
5			"github.com/memnix/memnixrest/app/models"
6			"github.com/memnix/memnixrest/app/queries"
7			"github.com/memnix/memnixrest/pkg/database"
8			"github.com/memnix/memnixrest/pkg/utils"
9			"net/http"
10			"os"
11			"strconv"
12			"strings"
13			"time"
14
15			"github.com/gofiber/fiber/v2"
16			"github.com/golang-jwt/jwt"
17			"golang.org/x/crypto/bcrypt"
18			)
19
20			var SecretKey = os.Getenv("SECRET") // SecretKey env variable
21
22			// Register function to create a new user
23			// @Description Create a new user
24			// @Summary creates a new user
25			// @Tags Auth
26			// @Produce json
27			// @Param credentials body models.RegisterStruct true "Credentials"
28			// @Success 200 {object} models.User
29			// @Failure 403 "Forbidden"
30			// @Router /v1/register [post]
31			func Register(c *fiber.Ctx) error {
32			db := database.DBConn // DB Conn
33
34			var data models.RegisterStruct // Data object
35
36			if err := c.BodyParser(&data); err != nil {
37			return err
38			} // Parse body
39
40			// Register checks
41			if len(data.Password) > utils.MaxPasswordLen \|\| len(data.Username) > utils.MaxUsernameLen \|\| len(data.Email) > utils.MaxEmailLen {
42			log := models.CreateLog(fmt.Sprintf("Error on register: %s - %s", data.Username, data.Email), models.LogBadRequest).SetType(models.LogTypeWarning).AttachIDs(0, 0, 0)
43			_ = log.SendLog()
44			return queries.RequestError(c, http.StatusForbidden, utils.ErrorRequestFailed)
45			}
46
47			password, _ := bcrypt.GenerateFromPassword([]byte(data.Password), 10) // Hash password
48			user := models.User{
49			Username: data.Username,
50			Email: strings.ToLower(data.Email),
51			Password: password,
52			} // Create object
53
54			//TODO: manual checking for unique username and email
55			if err := db.Create(&user).Error; err != nil {
56			log := models.CreateLog(fmt.Sprintf("Error on register: %s - %s", data.Username, data.Email), models.LogAlreadyUsedEmail).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
57			_ = log.SendLog()
58			return queries.RequestError(c, http.StatusForbidden, utils.ErrorAlreadyUsedEmail)
59			} // Add user to DB
60
61			// Create log
62			log := models.CreateLog(fmt.Sprintf("Register: %s - %s", user.Username, user.Email), models.LogUserRegister).SetType(models.LogTypeInfo).AttachIDs(user.ID, 0, 0)
63			_ = log.SendLog() // Send log
64
65			return c.JSON(user) // Return user
66			}
67
68			// Login function to log in a user and return access with fresh token
69			// @Description Login the user and return a fresh token
70			// @Summary logins user and return a fresh token
71			// @Tags Auth
72			// @Produce json
73			// @Param credentials body models.LoginStruct true "Credentials"
74			// @Success 200 {object} models.LoginResponse
75			// @Failure 400 "Incorrect password or email"
76			// @Failure 500 "Internal error"
77			// @Router /v1/login [post]
78			func Login(c *fiber.Ctx) error {
79			db := database.DBConn // DB Conn
80
81			var data models.LoginStruct // Data object
82
83			if err := c.BodyParser(&data); err != nil {
84			return err
85			} // Parse body
86
87			var user models.User // User object
88
89			db.Where("email = ?", strings.ToLower(data.Email)).First(&user) // Get user
90
91			// handle error
92			if user.ID == 0 { // default Id when return nil
93			// Create log
94			log := models.CreateLog(fmt.Sprintf("Error on login: %s", data.Email), models.LogIncorrectEmail).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
95			_ = log.SendLog() // Send log
96			c.Status(fiber.StatusBadRequest) // BadRequest Status
97			// return error message as Json object
98			return c.JSON(models.LoginResponse{
99			Message: "Incorrect email or password !",
100			Token: "",
101			})
102			}
103
104			// Check password
105			if err := bcrypt.CompareHashAndPassword(user.Password, []byte(data.Password)); err != nil {
106			c.Status(fiber.StatusBadRequest) // BadRequest Status
107			log := models.CreateLog(fmt.Sprintf("Error on login: %s", data.Email), models.LogIncorrectPassword).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
108			_ = log.SendLog() // Send log
109			// return error message as Json object
110			return c.JSON(models.LoginResponse{
111			Message: "Incorrect email or password !",
112			Token: "",
113			})
114			}
115
116			// Create token
117			claims := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.StandardClaims{
118			Issuer: strconv.Itoa(int(user.ID)),
119			ExpiresAt: time.Now().Add(time.Hour * 336).Unix(), // 14 day
120			}) // expires after 2 weeks
121
122			token, err := claims.SignedString([]byte(SecretKey)) // Sign token
123			if err != nil {
124			log := models.CreateLog(fmt.Sprintf("Error on login: %s", err.Error()), models.LogLoginError).SetType(models.LogTypeError).AttachIDs(user.ID, 0, 0)
125			_ = log.SendLog() // Send log
126			c.Status(fiber.StatusInternalServerError) // InternalServerError Status
127			// return error message as Json object
128			return c.JSON(models.LoginResponse{
129			Message: "Incorrect email or password !",
130			Token: "",
131			})
132			}
133
134			log := models.CreateLog(fmt.Sprintf("Login: %s - %s", user.Username, user.Email), models.LogUserLogin).SetType(models.LogTypeInfo).AttachIDs(user.ID, 0, 0)
135			_ = log.SendLog() // Send log
136
137			// return token as Json object
138			return c.JSON(models.LoginResponse{
139			Message: "Login Succeeded",
140			Token: token,
141			})
142			}
143
144			// User function to get connected user
145			// @Description Get connected user
146			// @Summary gets connected user
147			// @Tags Auth
148			// @Produce json
149			// @Success 200 {object} models.ResponseAuth
150			// @Failure 401 "Forbidden"
151			// @Security Beaver
152			// @Router /v1/user [get]
153			func User(c *fiber.Ctx) error {
154			statusCode, response := IsConnected(c) // Check if connected
155
156			return c.Status(statusCode).JSON(response) // Return response
157			}
158
159			// Logout function to log user logout
160			// @Description Logout the user and create a record in the log
161			// @Summary logouts the user
162			// @Tags Auth
163			// @Produce json
164			// @Success 200 "Success"
165			// @Failure 401 "Forbidden"
166			// @Security Beaver
167			// @Router /v1/logout [post]
168			func Logout(c *fiber.Ctx) error {
169			auth := CheckAuth(c, models.PermUser) // Check auth
170			if !auth.Success {
171			// Return error
172			return c.Status(http.StatusUnauthorized).JSON(models.ResponseHTTP{
173			Success: false,
174			Message: auth.Message,
175			Data: nil,
176			Count: 0,
177			})
178			}
179
180			// Create log
181			log := models.CreateLog(fmt.Sprintf("Logout: %s - %s", auth.User.Username, auth.User.Email), models.LogUserLogout).SetType(models.LogTypeInfo).AttachIDs(auth.User.ID, 0, 0)
182			_ = log.SendLog()
183
184			// Return response with success
185			return c.JSON(fiber.Map{
186			"message": "successfully logged out !",
187			"token": "",
188			})
189			}
190
191			// AuthDebugMode function to bypass auth in debug mode
192			func AuthDebugMode(c *fiber.Ctx) models.ResponseAuth {
193			db := database.DBConn // DB Conn
194			var user models.User // User object
195
196			// Get user
197			if res := db.Where("id = ?", 6).First(&user); res.Error != nil {
198			c.Status(fiber.StatusInternalServerError) // InternalServerError Status
199			// return error message as Json object
200			return models.ResponseAuth{
201			Success: false,
202			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
203			}
204			}
205
206			return models.ResponseAuth{
207			Success: true,
208			Message: "Authenticated",
209			User: user,
210			}
211			}
212
213			// CheckAuth function to check if user is connected
214			func CheckAuth(c *fiber.Ctx, p models.Permission) models.ResponseAuth {
215			statusCode, response := IsConnected(c) // Check if connected
216
217			// Check statusCode
218			if statusCode != fiber.StatusOK {
219			c.Status(statusCode)
220			// Return response
221			return response
222			}
223
224			user := response.User // Get user from response
225
226			// Check permission
227			if user.Permissions < p {
228			// Log permission error
229			log := models.CreateLog(fmt.Sprintf("Permission error: %s \| had %s but tried %s", user.Email, user.Permissions.ToString(), p.ToString()), models.LogPermissionForbidden).SetType(models.LogTypeWarning).AttachIDs(user.ID, 0, 0)
230			_ = log.SendLog() // Send log
231			c.Status(fiber.StatusUnauthorized) // Unauthorized Status
232			// Return response
233			return models.ResponseAuth{
234			Success: false,
235			Message: "You don't have the right permissions to perform this request.",
236			}
237			}
238
239			// Validate permissions
240			return models.ResponseAuth{
241			Success: true,
242			Message: "Authenticated",
243			User: user,
244			}
245			}
246
247			// IsConnected function to check if user is connected
248			func IsConnected(c *fiber.Ctx) (int, models.ResponseAuth) {
249			db := database.DBConn // DB Conn
250			tokenString := extractToken(c) // Extract token
251			var user models.User // User object
252
253			// Parse token
254			token, err := jwt.Parse(tokenString, jwtKeyFunc)
255			if err != nil {
256			// Return error
257			return fiber.StatusForbidden, models.ResponseAuth{
258			Success: false,
259			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
260			User: user,
261			}
262			}
263			// Check if token is valid
264			claims := token.Claims.(jwt.MapClaims)
265
266			// Get user from token
267			if res := db.Where("id = ?", claims["iss"]).First(&user); res.Error != nil {
268			// Generate log
269			log := models.CreateLog(fmt.Sprintf("Error on check auth: %s", res.Error), models.LogLoginError).SetType(models.LogTypeError).AttachIDs(user.ID, 0, 0)
270			_ = log.SendLog() // Send log
271			c.Status(fiber.StatusInternalServerError) // InternalServerError Status
272			// return error
273			return fiber.StatusInternalServerError, models.ResponseAuth{
274			Success: false,
275			Message: "Failed to get the user. Try to logout/login. Otherwise, contact the support",
276			User: user,
277			}
278			}
279
280			// User is connected
281			return fiber.StatusOK, models.ResponseAuth{
282			Success: true,
283			Message: "User is connected",
284			User: user,
285			}
286			}
287
288			// extractToken function to extract token from header
289			func extractToken(c *fiber.Ctx) string {
290			token := c.Get("Authorization") // Get token from header
291			// Normally Authorization HTTP header.
292			onlyToken := strings.Split(token, " ") // Split token
293			if len(onlyToken) == 2 {
294			return onlyToken[1] // Return only token
295			}
296			return "" // Return empty string
297			}
298
299			// jwtKeyFunc function to get the key for the token
300			func jwtKeyFunc(_ *jwt.Token) (interface{}, error) {
301			return []byte(SecretKey), nil // Return secret key
302			}
303

memnix / memnix-rest

Pull Request — main (#42)

controllers.CheckAuth A

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