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otp.go
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otp.go
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package otp
import (
//nolint //G501: Blocklisted import crypto/md5: weak cryptographic primitive
"crypto/md5"
"errors"
"fmt"
"math"
mail2 "net/mail"
"regexp"
"strconv"
"strings"
"github.com/dongri/phonenumber"
"github.com/latolukasz/beeorm"
"github.com/coretrix/hitrix/pkg/entity"
"github.com/coretrix/hitrix/pkg/helper"
"github.com/coretrix/hitrix/pkg/queue/streams"
"github.com/coretrix/hitrix/service/component/clock"
"github.com/coretrix/hitrix/service/component/generator"
"github.com/coretrix/hitrix/service/component/mail"
)
type IOTP interface {
Send(ormService *beeorm.Engine, send Send) (string, error)
Verify(ormService *beeorm.Engine, verify Verify) (bool, bool, error)
GetSMSGatewayRegistry() map[string]IOTPSMSGateway
}
type Phone struct {
Number string
ISO3166 phonenumber.ISO3166
}
type Email struct {
Email string
}
type Send struct {
Phone *Phone
SMSCustomMessage string
Email *Email
EmailConfig *EmailConfig
}
type EmailConfig struct {
From string
Subject string
TemplateName string
}
type Verify struct {
Phone *Phone
Email *Email
Code string
}
type Config struct {
ClockService clock.IClock
SMSConfig SMSConfig
MailConfig MailConfig
CodeLength int
GeneratorService generator.IGenerator
}
type SMSConfig struct {
SMSGateways []IOTPSMSGateway
RetryOTP bool
}
type MailConfig struct {
Sender mail.ISender
}
type OTP struct {
ClockService clock.IClock
GeneratorService generator.IGenerator
SMSGatewayPriority []IOTPSMSGateway
SMSGatewayName map[string]IOTPSMSGateway
SMSGatewayPhonePrefixRegex map[*regexp.Regexp]IOTPSMSGateway
SMSRetryOTP bool
MailSender mail.ISender
CodeLength int
}
func NewOTP(config Config) *OTP {
otp := &OTP{
SMSGatewayPriority: make([]IOTPSMSGateway, 0),
SMSGatewayName: map[string]IOTPSMSGateway{},
SMSGatewayPhonePrefixRegex: map[*regexp.Regexp]IOTPSMSGateway{},
SMSRetryOTP: config.SMSConfig.RetryOTP,
MailSender: config.MailConfig.Sender,
GeneratorService: config.GeneratorService,
ClockService: config.ClockService,
}
for _, gateway := range config.SMSConfig.SMSGateways {
_, has := otp.SMSGatewayName[gateway.GetName()]
if has {
panic("OTPProviders duplicated for name: " + gateway.GetName())
}
otp.SMSGatewayName[gateway.GetName()] = gateway
phonePrefixes := gateway.GetPhonePrefixes()
if phonePrefixes == nil {
otp.SMSGatewayPriority = append(otp.SMSGatewayPriority, gateway)
} else {
regex := "^"
for i, phonePrefix := range phonePrefixes {
regex += "(\\" + phonePrefix + ")"
if i < len(phonePrefixes)-1 {
regex += "|"
}
}
compiledRegex, err := regexp.Compile(regex)
if err != nil {
panic(err)
}
otp.SMSGatewayPhonePrefixRegex[compiledRegex] = gateway
}
}
otp.CodeLength = 5
if config.CodeLength > 0 {
otp.CodeLength = config.CodeLength
}
return otp
}
func (o *OTP) Send(ormService *beeorm.Engine, send Send) (string, error) {
if send.Phone != nil {
return o.sendSMS(ormService, send)
} else if send.Email != nil {
return o.sendEmail(ormService, send)
}
panic("no send method selected")
}
func (o *OTP) Verify(ormService *beeorm.Engine, verify Verify) (bool, bool, error) {
if verify.Phone != nil {
return o.verifySMS(ormService, verify)
} else if verify.Email != nil {
return o.verifyEmail(ormService, verify)
}
panic("no verify method selected")
}
func (o *OTP) GetSMSGatewayRegistry() map[string]IOTPSMSGateway {
return o.SMSGatewayName
}
func (o *OTP) sendSMS(ormService *beeorm.Engine, send Send) (string, error) {
//validate phone
phone := send.Phone
var code string
var err error
gatewayPriority := make([]IOTPSMSGateway, 0)
for regex, gateway := range o.SMSGatewayPhonePrefixRegex {
if regex.MatchString(phone.Number) {
gatewayPriority = append(gatewayPriority, gateway)
}
}
if len(gatewayPriority) == 0 {
gatewayPriority = o.SMSGatewayPriority
}
for priority, gateway := range gatewayPriority {
code = gateway.GetCode()
text := code
if send.SMSCustomMessage != "" {
text = strings.Replace(send.SMSCustomMessage, "_CODE_", code, -1)
}
otpTrackerEntity := &entity.OTPTrackerEntity{
Type: entity.OTPTrackerTypeSMS,
To: phone.Number,
Code: code,
GatewayName: gateway.GetName(),
GatewayPriority: uint8(priority),
GatewaySendStatus: entity.OTPTrackerGatewaySendStatusNew,
SentAt: o.ClockService.Now(),
}
otpTrackerEntity.GatewaySendRequest, otpTrackerEntity.GatewaySendResponse, err = gateway.SendOTP(phone, text)
if err != nil {
otpTrackerEntity.GatewaySendStatus = entity.OTPTrackerGatewaySendStatusGatewayError
} else {
otpTrackerEntity.GatewaySendStatus = entity.OTPTrackerGatewaySendStatusSent
}
ormService.Flush(otpTrackerEntity)
if err == nil {
ormService.GetRedis().Set(o.getRedisKey(phone.Number), otpTrackerEntity.ID, helper.Hour)
break
} else if o.SMSRetryOTP {
ormService.GetEventBroker().Publish(streams.StreamMsgRetryOTP, &RetryDTO{
Code: code,
Phone: phone,
OTPTrackerEntityID: otpTrackerEntity.ID,
Gateway: gateway.GetName(),
})
}
}
return code, err
}
func (o *OTP) sendEmail(ormService *beeorm.Engine, send Send) (string, error) {
if o.MailSender == nil {
panic("mail sender not defined")
}
email := send.Email.Email
_, err := mail2.ParseAddress(email)
if err != nil {
return "", errors.New("mail address not valid")
}
code := o.getCode()
otpTrackerEntity := &entity.OTPTrackerEntity{
Type: entity.OTPTrackerTypeSMS,
To: email,
Code: code,
GatewaySendStatus: entity.OTPTrackerGatewaySendStatusNew,
SentAt: o.ClockService.Now(),
}
err = o.MailSender.SendTemplate(ormService, &mail.Message{
From: send.EmailConfig.From,
To: email,
Subject: send.EmailConfig.Subject,
TemplateName: send.EmailConfig.TemplateName,
TemplateData: map[string]interface{}{"code": code},
})
if err != nil {
otpTrackerEntity.GatewaySendStatus = entity.OTPTrackerGatewaySendStatusGatewayError
} else {
otpTrackerEntity.GatewaySendStatus = entity.OTPTrackerGatewaySendStatusSent
}
ormService.Flush(otpTrackerEntity)
ormService.GetRedis().Set(o.getRedisKey(email), otpTrackerEntity.ID, helper.Hour)
return code, err
}
func (o *OTP) verifySMS(ormService *beeorm.Engine, verify Verify) (bool, bool, error) {
otpTrackerEntity, err := o.getOTPTrackerEntity(ormService, verify.Phone.Number)
if err != nil {
return false, false, err
}
gateway := o.SMSGatewayName[otpTrackerEntity.GatewayName]
var otpRequestValid bool
var otpCodeValid bool
otpTrackerEntity.GatewayVerifyRequest, otpTrackerEntity.GatewayVerifyResponse, otpRequestValid, otpCodeValid, err =
gateway.VerifyOTP(verify.Phone, verify.Code, otpTrackerEntity.Code)
if err != nil {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusGatewayError
} else if !otpRequestValid {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusExpired
} else if !otpCodeValid {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusInvalidCode
} else {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusSuccess
}
ormService.Flush(otpTrackerEntity)
return otpRequestValid, otpCodeValid, err
}
func (o *OTP) verifyEmail(ormService *beeorm.Engine, verify Verify) (bool, bool, error) {
otpTrackerEntity, err := o.getOTPTrackerEntity(ormService, verify.Email.Email)
if err != nil {
return false, false, err
}
if otpTrackerEntity.Code == verify.Code {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusSuccess
} else {
otpTrackerEntity.GatewayVerifyStatus = entity.OTPTrackerGatewayVerifyStatusInvalidCode
}
ormService.Flush(otpTrackerEntity)
return true, otpTrackerEntity.Code == verify.Code, nil
}
func (o *OTP) getOTPTrackerEntity(ormService *beeorm.Engine, verifyKey string) (*entity.OTPTrackerEntity, error) {
otpTrackerEntityIDString, has := ormService.GetRedis().Get(o.getRedisKey(verifyKey))
if !has {
return nil, errors.New("OTP: redis key expired")
}
otpTrackerEntityID, err := strconv.ParseUint(otpTrackerEntityIDString, 10, 64)
if err != nil {
return nil, errors.New("OTP: " + err.Error())
}
otpTrackerEntity := &entity.OTPTrackerEntity{}
found := ormService.LoadByID(otpTrackerEntityID, otpTrackerEntity)
if !found {
return nil, errors.New("OTP tracker not found")
}
return otpTrackerEntity, nil
}
func (o *OTP) getRedisKey(verifyKey string) string {
// #nosec
return fmt.Sprintf("otp_%x", md5.Sum([]byte(verifyKey)))
}
func (o *OTP) getCode() string {
return strconv.FormatInt(
o.GeneratorService.GenerateRandomRangeNumber(
int64(math.Pow(10, float64(o.CodeLength-1))),
int64(math.Pow(10, float64(o.CodeLength)))-1,
),
10)
}
type RetryDTO struct {
Code string
Phone *Phone
OTPTrackerEntityID uint64
Gateway string
}