service

Documentation

Overview

Package service contains common functions used by the whole application

Index

• func CalcHash(plaintext, keyOptional []byte) ([]byte, error)
• func DecryptEmail(emailNonce, emailCipher string) (email string, err error)
• func DelMem2FA(authID uint64)
• func GenerateCode(length int) (string, error)
• func GetClaims(c *gin.Context) middleware.MyCustomClaims
• func GetHash(dataIn []byte) (dataOut []byte, err error)
• func GetUserByEmail(email string, decryptEmail bool) (*model.Auth, error)
• func IsTokenAllowed(jti string) bool
• func JWTBlacklistChecker() gin.HandlerFunc
• func Postmark(params PostmarkParams) (postmark.EmailResponse, error)
• func RandomByte(length int) ([]byte, error)
• func SendEmail(email string, emailType int, opts ...string) (bool, error)
• func Validate2FA(encryptedMessage []byte, issuer string, userInput string) ([]byte, string, error)
• func ValidateAuthID(authID uint64) bool
• func ValidateUserID(authID uint64, email string) bool
• type PostmarkParams

Functions

func CalcHash

func CalcHash(plaintext, keyOptional []byte) ([]byte, error)

CalcHash generates a fixed-sized BLAKE2b-256 hash of the given text

func DecryptEmail

func DecryptEmail(emailNonce, emailCipher string) (email string, err error)

DecryptEmail returns the plaintext email from the given cipher and nonce

func DelMem2FA

func DelMem2FA(authID uint64)

DelMem2FA - delete secrets from memory

func GenerateCode

func GenerateCode(length int) (string, error)

GenerateCode generates a random alphanumeric code of the given length

func GetClaims

func GetClaims(c *gin.Context) middleware.MyCustomClaims

GetClaims - get JWT custom claims

func GetHash

func GetHash(dataIn []byte) (dataOut []byte, err error)

GetHash returns single or nested hash of the data

func GetUserByEmail

func GetUserByEmail(email string, decryptEmail bool) (*model.Auth, error)

GetUserByEmail fetches auth info by email or hash of the email

func IsTokenAllowed

func IsTokenAllowed(jti string) bool

IsTokenAllowed returns true when the token is not in the blacklist

Dependency: JWT, Redis database + enable 'INVALIDATE_JWT' in .env

func JWTBlacklistChecker

func JWTBlacklistChecker() gin.HandlerFunc

JWTBlacklistChecker validates a token against the blacklist

func Postmark

func Postmark(params PostmarkParams) (postmark.EmailResponse, error)

Postmark email delivery service using HTML templates

https://postmarkapp.com/developer/api/email-api

https://postmarkapp.com/developer/api/templates-api

https://account.postmarkapp.com/servers/{ServerID}/templates

func RandomByte

func RandomByte(length int) ([]byte, error)

RandomByte returns a secure random byte slice of the given length

func SendEmail

func SendEmail(email string, emailType int, opts ...string) (bool, error)

SendEmail sends a verification/password recovery email if

- required by the application

- an external email service is configured

- a redis database is configured

{true, nil} => email delivered successfully

{false, nil} => email delivery not required/service not configured

{false, error} => email delivery failed

func Validate2FA

func Validate2FA(encryptedMessage []byte, issuer string, userInput string) ([]byte, string, error)

Validate2FA validates user-provided OTP

func ValidateAuthID

func ValidateAuthID(authID uint64) bool

ValidateAuthID - check whether authID is missing

func ValidateUserID

func ValidateUserID(authID uint64, email string) bool

ValidateUserID - check whether authID or email is missing

Types

type PostmarkParams

type PostmarkParams struct {
	ServerToken   string
	TemplateID    int64
	From          string
	To            string
	Tag           string
	TrackOpens    bool
	TrackLinks    string
	MessageStream string
	HTMLModel     map[string]interface{}
}

PostmarkParams - parameters for postmark email delivery service