197 lines
4.8 KiB
Go
197 lines
4.8 KiB
Go
package models
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
"golang.org/x/crypto/bcrypt"
|
|
"gorm.io/gorm"
|
|
)
|
|
|
|
type User struct {
|
|
Model
|
|
Username string `gorm:"unique,size:128"`
|
|
Password *string `gorm:"size:256`
|
|
RootPath string `gorm:"size:512`
|
|
Admin bool `gorm:"default:false"`
|
|
}
|
|
|
|
// func (u *User) ID() int {
|
|
// return u.UserID
|
|
// }
|
|
|
|
type AccessToken struct {
|
|
Model
|
|
UserID int
|
|
User User `gorm:"constraint:OnDelete:CASCADE;"`
|
|
Value string `gorm:"size:24`
|
|
Expire time.Time
|
|
}
|
|
|
|
var ErrorInvalidUserCredentials = errors.New("invalid credentials")
|
|
|
|
// func NewUserFromRow(row *sql.Row) (*User, error) {
|
|
// user := User{}
|
|
|
|
// if err := row.Scan(&user.UserID, &user.Username, &user.Password, &user.RootPath, &user.Admin); err != nil {
|
|
// return nil, errors.Wrap(err, "failed to scan user from database")
|
|
// }
|
|
|
|
// return &user, nil
|
|
// }
|
|
|
|
// func NewUsersFromRows(rows *sql.Rows) ([]*User, error) {
|
|
// users := make([]*User, 0)
|
|
|
|
// for rows.Next() {
|
|
// var user User
|
|
// if err := rows.Scan(&user.UserID, &user.Username, &user.Password, &user.RootPath, &user.Admin); err != nil {
|
|
// return nil, errors.Wrap(err, "failed to scan users from database")
|
|
// }
|
|
// users = append(users, &user)
|
|
// }
|
|
|
|
// rows.Close()
|
|
|
|
// return users, nil
|
|
// }
|
|
|
|
func AuthorizeUser(db *gorm.DB, username string, password string) (*User, error) {
|
|
// row := database.QueryRow("SELECT * FROM user WHERE username = ?", username)
|
|
|
|
var user User
|
|
|
|
result := db.Where("username = ?", username).First(&user)
|
|
if result.Error != nil {
|
|
if errors.Is(result.Error, gorm.ErrRecordNotFound) {
|
|
return nil, ErrorInvalidUserCredentials
|
|
}
|
|
return nil, errors.Wrap(result.Error, "failed to get user by username when authorizing")
|
|
}
|
|
|
|
if user.Password == nil {
|
|
return nil, errors.New("user does not have a password")
|
|
}
|
|
|
|
if err := bcrypt.CompareHashAndPassword([]byte(*user.Password), []byte(password)); err != nil {
|
|
if err == bcrypt.ErrMismatchedHashAndPassword {
|
|
return nil, ErrorInvalidUserCredentials
|
|
} else {
|
|
return nil, errors.Wrap(err, "compare user password hash")
|
|
}
|
|
}
|
|
|
|
return &user, nil
|
|
}
|
|
|
|
var ErrorInvalidRootPath = errors.New("invalid root path")
|
|
|
|
func ValidRootPath(rootPath string) bool {
|
|
_, err := os.Stat(rootPath)
|
|
if err != nil {
|
|
log.Printf("Warn: invalid root path: '%s'\n%s\n", rootPath, err)
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func RegisterUser(db *gorm.DB, username string, password *string, rootPath string, admin bool) (*User, error) {
|
|
if !ValidRootPath(rootPath) {
|
|
return nil, ErrorInvalidRootPath
|
|
}
|
|
|
|
user := User{
|
|
Username: username,
|
|
RootPath: rootPath,
|
|
Admin: admin,
|
|
}
|
|
|
|
if password != nil {
|
|
hashedPassBytes, err := bcrypt.GenerateFromPassword([]byte(*password), 12)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to hash password")
|
|
}
|
|
hashedPass := string(hashedPassBytes)
|
|
|
|
user.Password = &hashedPass
|
|
}
|
|
|
|
result := db.Create(&user)
|
|
if result.Error != nil {
|
|
return nil, errors.Wrap(result.Error, "insert new user with password into database")
|
|
}
|
|
|
|
return &user, nil
|
|
}
|
|
|
|
func (user *User) GenerateAccessToken(db *gorm.DB) (*AccessToken, error) {
|
|
bytes := make([]byte, 24)
|
|
if _, err := rand.Read(bytes); err != nil {
|
|
return nil, errors.New(fmt.Sprintf("Could not generate token: %s\n", err.Error()))
|
|
}
|
|
const CHARACTERS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
for i, b := range bytes {
|
|
bytes[i] = CHARACTERS[b%byte(len(CHARACTERS))]
|
|
}
|
|
|
|
token_value := string(bytes)
|
|
expire := time.Now().Add(14 * 24 * time.Hour)
|
|
// expireString := expire.UTC().Format("2006-01-02 15:04:05")
|
|
|
|
// if _, err := database.Exec("INSERT INTO access_token (value, expire, user_id) VALUES (?, ?, ?)", token_value, expireString, user.UserID); err != nil {
|
|
// return nil, err
|
|
// }
|
|
|
|
token := AccessToken{
|
|
UserID: user.ID,
|
|
Value: token_value,
|
|
Expire: expire,
|
|
}
|
|
|
|
result := db.Create(&token)
|
|
if result.Error != nil {
|
|
return nil, errors.Wrap(result.Error, "saving access token to database")
|
|
}
|
|
|
|
return &token, nil
|
|
}
|
|
|
|
func VerifyTokenAndGetUser(db *gorm.DB, token string) (*User, error) {
|
|
|
|
now := time.Now().UTC().Format("2006-01-02 15:04:05")
|
|
|
|
// row := database.QueryRow("SELECT (user_id) FROM access_token WHERE expire > ? AND value = ?", now, token)
|
|
|
|
var accessToken AccessToken
|
|
result := db.Where("expire > ? AND value = ?", now, token).First(&accessToken)
|
|
if result.Error != nil {
|
|
return nil, result.Error
|
|
}
|
|
|
|
// var userId string
|
|
|
|
// if err := row.Scan(&userId); err != nil {
|
|
// log.Println(err.Error())
|
|
// return nil, err
|
|
// }
|
|
|
|
// row = db.QueryRow("SELECT * FROM user WHERE user_id = ?", userId)
|
|
// user, err := NewUserFromRow(row)
|
|
// if err != nil {
|
|
// return nil, err
|
|
// }
|
|
|
|
var user User
|
|
result = db.First(&user, accessToken.ID)
|
|
if result.Error != nil {
|
|
return nil, result.Error
|
|
}
|
|
|
|
return &user, nil
|
|
}
|