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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package totp | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto/rand" | ||
| "encoding/base64" | ||
| "github.com/pquerna/otp/totp" | ||
| "html/template" | ||
| "image/png" | ||
| "strings" | ||
| ) | ||
|
|
||
| const secretSize = 16 | ||
|
|
||
| func GenerateQRCode(username, siteUrl string, secret []byte) (string, template.URL, error, []byte) { | ||
| var err error | ||
| if secret == nil { | ||
| secret, err = generateSecret() | ||
| if err != nil { | ||
| return "", "", err, nil | ||
| } | ||
| } | ||
|
|
||
| otpKey, err := totp.Generate(totp.GenerateOpts{ | ||
| SecretSize: secretSize, | ||
| Issuer: "Opengist (" + strings.ReplaceAll(siteUrl, ":", "") + ")", | ||
| AccountName: username, | ||
| Secret: secret, | ||
| }) | ||
| if err != nil { | ||
| return "", "", err, nil | ||
| } | ||
|
|
||
| qrcode, err := otpKey.Image(320, 240) | ||
| if err != nil { | ||
| return "", "", err, nil | ||
| } | ||
|
|
||
| var imgBytes bytes.Buffer | ||
| if err = png.Encode(&imgBytes, qrcode); err != nil { | ||
| return "", "", err, nil | ||
| } | ||
|
|
||
| qrcodeImage := template.URL("data:image/png;base64," + base64.StdEncoding.EncodeToString(imgBytes.Bytes())) | ||
|
|
||
| return otpKey.Secret(), qrcodeImage, nil, secret | ||
| } | ||
|
|
||
| func Validate(passcode, secret string) bool { | ||
| return totp.Validate(passcode, secret) | ||
| } | ||
|
|
||
| func generateSecret() ([]byte, error) { | ||
| secret := make([]byte, secretSize) | ||
| _, err := rand.Reader.Read(secret) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return secret, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| package db | ||
|
|
||
| import ( | ||
| "crypto/rand" | ||
| "encoding/base64" | ||
| "encoding/hex" | ||
| "encoding/json" | ||
| "fmt" | ||
| ogtotp "github.com/thomiceli/opengist/internal/auth/totp" | ||
| "github.com/thomiceli/opengist/internal/utils" | ||
| "slices" | ||
| ) | ||
|
|
||
| type TOTP struct { | ||
| ID uint `gorm:"primaryKey"` | ||
| UserID uint `gorm:"uniqueIndex"` | ||
| User User | ||
| Secret string | ||
| RecoveryCodes jsonData `gorm:"type:json"` | ||
| CreatedAt int64 | ||
| LastUsedAt int64 | ||
| } | ||
|
|
||
| func GetTOTPByUserID(userID uint) (*TOTP, error) { | ||
| var totp TOTP | ||
| err := db.Where("user_id = ?", userID).First(&totp).Error | ||
| return &totp, err | ||
| } | ||
|
|
||
| func (totp *TOTP) StoreSecret(secret string) error { | ||
| secretBytes := []byte(secret) | ||
| encrypted, err := utils.AESEncrypt([]byte("tmp"), secretBytes) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| totp.Secret = base64.URLEncoding.EncodeToString(encrypted) | ||
| return nil | ||
| } | ||
|
|
||
| func (totp *TOTP) ValidateCode(code string) (bool, error) { | ||
| ciphertext, err := base64.URLEncoding.DecodeString(totp.Secret) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| secretBytes, err := utils.AESDecrypt([]byte("tmp"), ciphertext) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| return ogtotp.Validate(code, string(secretBytes)), nil | ||
| } | ||
|
|
||
| func (totp *TOTP) ValidateRecoveryCode(code string) (bool, error) { | ||
| var hashedCodes []string | ||
| if err := json.Unmarshal(totp.RecoveryCodes, &hashedCodes); err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| for i, hashedCode := range hashedCodes { | ||
| ok, err := utils.Argon2id.Verify(code, hashedCode) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
| if ok { | ||
| codesJson, _ := json.Marshal(slices.Delete(hashedCodes, i, i+1)) | ||
| totp.RecoveryCodes = codesJson | ||
| return true, db.Model(&totp).Updates(TOTP{RecoveryCodes: codesJson}).Error | ||
| } | ||
| } | ||
| return false, nil | ||
| } | ||
|
|
||
| func (totp *TOTP) GenerateRecoveryCodes() ([]string, error) { | ||
| codes, plainCodes, err := generateRandomCodes() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| codesJson, _ := json.Marshal(codes) | ||
| totp.RecoveryCodes = codesJson | ||
|
|
||
| return plainCodes, db.Model(&totp).Updates(TOTP{RecoveryCodes: codesJson}).Error | ||
| } | ||
|
|
||
| func (totp *TOTP) Create() error { | ||
| return db.Create(&totp).Error | ||
| } | ||
|
|
||
| func (totp *TOTP) Delete() error { | ||
| return db.Delete(&totp).Error | ||
| } | ||
|
|
||
| func generateRandomCodes() ([]string, []string, error) { | ||
| const count = 5 | ||
| const length = 10 | ||
| codes := make([]string, count) | ||
| plainCodes := make([]string, count) | ||
| for i := 0; i < count; i++ { | ||
| bytes := make([]byte, (length+1)/2) | ||
| if _, err := rand.Read(bytes); err != nil { | ||
| return nil, nil, err | ||
| } | ||
| hexCode := hex.EncodeToString(bytes) | ||
| code := fmt.Sprintf("%s-%s", hexCode[:length/2], hexCode[length/2:]) | ||
| plainCodes[i] = code | ||
| hashed, err := utils.Argon2id.Hash(code) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| codes[i] = hashed | ||
| } | ||
| return codes, plainCodes, nil | ||
| } | ||
|
|
||
| // -- DTO -- // | ||
|
|
||
| type TOTPDTO struct { | ||
| Code string `form:"code" validate:"max=50"` | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "crypto/aes" | ||
| "crypto/cipher" | ||
| "crypto/rand" | ||
| "fmt" | ||
| "io" | ||
| ) | ||
|
|
||
| func AESEncrypt(key, text []byte) ([]byte, error) { | ||
| block, err := aes.NewCipher(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ciphertext := make([]byte, aes.BlockSize+len(text)) | ||
| iv := ciphertext[:aes.BlockSize] | ||
| if _, err = io.ReadFull(rand.Reader, iv); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| stream := cipher.NewCFBEncrypter(block, iv) | ||
| stream.XORKeyStream(ciphertext[aes.BlockSize:], text) | ||
|
|
||
| return ciphertext, nil | ||
| } | ||
|
|
||
| func AESDecrypt(key, ciphertext []byte) ([]byte, error) { | ||
| block, err := aes.NewCipher(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if len(ciphertext) < aes.BlockSize { | ||
| return nil, fmt.Errorf("ciphertext too short") | ||
| } | ||
|
|
||
| iv := ciphertext[:aes.BlockSize] | ||
| ciphertext = ciphertext[aes.BlockSize:] | ||
|
|
||
| stream := cipher.NewCFBDecrypter(block, iv) | ||
| stream.XORKeyStream(ciphertext, ciphertext) | ||
|
|
||
| return ciphertext, nil | ||
| } |
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